A335 P9 / SA 335 P22 ASTM Standard Power Plant Economizer 6 Inches
Diameter Sprial Welding
• Boiler economizers are heat exchange devices with finned tubes
that heat a liquid, sometimes water, up to however sometimes
doesn't exceed the boiling purpose of liquid.
• We can manufacture three types of boiler economizer, bare tube
economizer, H finned tube economizer and spiral finned tube
• H-finned tube economizer is high efficient heat exchanger
economizer which is consisted of H-finned tubes.
• Compared with bare tube economizer, H-finned tube economizer can
enlarge the heat exchange area and reduce the number of tubes.
• It also can increase the flue gas flow area in order to reduce
the flue gas flow speed and abrasion.
H-finned tube can be made as double H finned tubes , with high
rigidness to fit long tube row.
• The spiral finned economizer is a newly designed heat transfer
equipment, consists of spiral fin tubes to overcome the serious
abrasion and short service time.
|Material||Alloy steel, Carbon steel, SA210C ,SA213T22, etc.|
|Material standard||ASTM, EN or ISO etc.|
Min: 10 ton
|Smelting Process:||EF+LF + VD|
|Process||Material→Ingot → Hot/Cold-Rolling→ Heat treatment (Normalizing+
tempering) → Inspection →rough machining→UT →2nd Heat treatment
→finishing machining →Inspection|
|UT standard||ASTM A388 or EN10228, etc|
• Impact test and Strength calculation report with applied
• 100%NDT(non-destructive inspection) report of steel plate, tube
• X-ray, γ-ray and liquid penetrant test inspection report (welding
seam): to ensure the quality of the entire boiler.
• Hydraulic test report: ensure the standard working pressure and
|•||Fabrication area of 400,000 square meters|
|•||600 Coded welders|
|•||60 Licensed Inspectors(NDT Level-III instructors)|
|•||Class-A Licenses for Design and Manufacture Boiler|
|•||ISO 9001:2008 Quality System|
ASME Certificate of Power Boilers
ASME 'S','U' and NB stamp authorization
Products in the workshop